A primary source is a source that has seen the event you're researching first hand and has either spoken with you or wrote a book about what they saw. A Secondary source is a source that has known somone who has seen the event and has told them about it. The advantages of a primary source first and foremost is the accuracy of the story. I don't really know of any disadvantages. The Advantages of a Secondary source is that they could propose a new idea or look at the event from a different point of view or study the many different aspects of the event that occured. The disadvantage may be the lack of accuracy because many just do a little research and think they can write a book on it.
relative change is a proprotional change where absolute change is a complete change.........
Relative frequency is a method of calculating the frequency of an event. Percentage frequency is a way of presenting the frequency of an event.
absolute deviation is a difference between say two numbers. The result has the same units as the two numbers have. Relative deviation is a ratio and so it is a pure number without any units.
Frequency distribution refers to a set of frequencies with a particular set of values into which a statistical population is grouped. Relative frequency refers to data presented in a table that demonstrates the relative frequency of multiple non-overlapping classes.
A frequency distribution lists each value in the distribution and the number times it appears, while a relative frequency distribution reports the proportion of cases reporting each value
1, describe the methode of reducing the levels and thier relative advantages and disadvantages 2, writetypes of levelling instruments and methodes of leveling
Relative dating methods provide a chronological framework by determining the relative order of artifacts or events, making it useful for understanding the sequence of geological and archaeological events. However, they do not provide specific ages and rely on the principle of superposition, which may not always accurately reflect the true chronological order. Furthermore, relative dating methods are unable to provide precise dates, making it challenging to compare events across different regions.
disadvantage formal communicative network
advantages:wide range of mechanical properties.fabricated with relative ease.economical to produce.disadvantages:relative high density.low electrical conductivity.inherent susceptibility to corrosion.
advantages: correctly shows the relative sizes of Earth's landmasses disadvantages: has distortion shows the landmasses near the edges stretched and curved
There are no disadvantages to coral reef because, animals live with and if there was problem they would just have to die cause its everywhere
Advantage of a gravity dam is that every section will be stable and reliable. An Earth dam can overflow and collapse because of erosion.
ssd
absolute chronology is to be exact relative chronology is to round
amplitude
absolute chronology is to be exact relative chronology is to round
An external drive will be a little slower because of the speed differences between SATA (internal) and USB (external). The obvious advantage to an external is changeability, ease of access, etc.